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E. DUPLESSIS. SHOE SEWING MACHINE.

Patented Nov. 22, I898.

(No Model.) (Application filed Dec. 27, 1 894. Renewed Apr. 11, 189B.) '8 sheets-sheet 6 71 m 6 I D5 I ha 72 2 '2' J I I -o s13 6 C/ [I] m 2 4 l 2 3/19 a & W) Z 2 k a/ a vweultoz m: NORRIS wzrsns co. PHOTO-D1111 wnsumcrmu. o. c.

No. 6|4,802. Patented Nov. 22, I898.

E. DUPLESSIS.

SHOE SEWING MACHINE.

(Application filed Dec. 27, 1894. Renewed Apr. 11, 189B.)

(No Model.) l6 Sheets-Sheet 2.

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Patented Nov. 22, 1898.

E. DUPLESSIS. SHOE SEWING MACHINE.

(Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

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(Now Model.)

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Patented Nov. 22, I898.

E. DUPLESSIS.

SHOE SEWING MAGHINE.

(Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

(No Model.) I6 Sheets-Sheet 4.

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Patented Nov; 2211898. E. DUPLESSIS.

I SHOE SEWING MACHINE. (Applicntion filed Dem '27, 189 4. Renewed Apr. 11, 1898.)

I6 sheets-sheet s.

(No Model.)

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Patented Nov. 22, I898.

w s Qvv E II- P u D E 2 o. M 6 0 SHOE SEWING MACHINE. (Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

(No Model.)

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. Patented Nov. 22, I898. E. DUPLESSIS.

SHOE SEWING MACHINE.

(Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

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Patented Nbv. 22', I898.

E DUPLESSIS SHOE SEWING MACHINE. (Applicatio'n filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

(No Model.)

No. 6l4,802. Patented Nov. 22, I898. E. DUPLESSIS.

. SHOE SEWING MACHINE.

(Application filed Deg. 27, 1894. Renewed Apr. 11, 1893.)

I6 Sheets-Sheet 9.

(No Model.)

Patented Nov. 22, |898.'

E. DUPLESSIS. v SHOE SEWING MACHINE.

(Application filed Dec. 27, 1394. Renewed Apr. 11, 1898.)

I6 Sheets-Sheet ID.

(No Model.)

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Patented Nov. 22, I898.

E DUPLESSIS SHOE SEWING MACHINE. Applice.tion filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

I6 Sheets-Sheet II.

(No Model.)

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No. 6|4,s02. Patented Nov. 22, I898.

E. DUPLESSIS.

SHOE SEWING MACHINE.

(Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.) (No Model.) I6 Sheets-Sheet l2.

v A mm mm m No'. 6|4,802. Patented Nov. 22, I898.

E. DUPLESSIS.

SHOE SEWING MACHINE.

(Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.) (No Model.) I6 Sheets-Sheet l3.

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No. 6l4,802. I v Patented Nov. 22, I898.

i DUPLESSIS.

SHDE szwma MACHINE.

(Amxliefliion filed Dec; 27, 1 894. Renewed Apr. 11, 1898.) |lo Model.) l6 Sheets-Sheet l4.

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No. 6l4,802. Patented Nov. 22, I898.

E. DUPLESSIS.

SHOE SEWING MACHINE.

(Application filed Dec. 27, 1894. Benwed Apr. 11, 1898,)

I6 Sheets-Sheet l5.

(No Model.)

No. 6l4,802. Patnted Nov. 22, I898. E. DUPLESSIS. SHOE SEWING MACHINE. (Application filed Dec. 27, 1894. Renewed Apr. 11, 1898.)

I6 Sheets-Sheet Is.

(No Model.)

we cams PETERS co.. Pumaump" wnsn Nirrn STATES PATENT ELOUILD DUPLESSIS, OF ST. HYACINTHE, CANADA, ASSIGNOR, BY AND MESNE ASSIGNMENTS, OF TW'O-TIIIRDS TO EMILE ARTHUR MAR- CI'IILDON, OF SAME PLACE;

SHOE-SEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 614,802, dated November 22, 1898.

Application filed December 27, 1894. Renewed April 11, 1898. Serial No. 677,246. (No model.)

To (all whom, it may concern:

Be it known that I, ELOUILD DUPLEssIs, of the city of St. Hyacinthe, in the county of St. Hyacinthe and Province of Quebec, Canada, have invented certain new and useful Improvements in Sewing-Machines; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention relates to wax-thread lockstitch sewing-machines; and its object is to produce a machine with some of its instrumentalities or tools readily removable and interchangeable in order to allow other instrumentalities or tools to be substituted therefor, thereby enabling several kinds of work to be done, such as the McKay turned shoe, welted work, edge-stitching, and a va riety of plain sewing.

The invention also has the efiect of providing a lock-stitch sewing-machine to do either one of the various kinds of work just mentioned that will be simple in construction and exceedingly free from friction 5 but I will only include in this application the machine when fitted with the readily removable and interchangeable instrumentalities or tools necessary to do through-andthrough sewing,where a horn is required, as in McKay work, the machine as adapted to do the other kinds of work being described and claimed in subsequent applications, Serial Nos. 559,088 and 559,199,filed,respectively,on August 12, 1895, and August 13, 1895.

A machine constructed according to my present invention embodies a needle, a readily-removable presser-foot, a readily-removable feed device, a thread-carrier, a threadcase, and a thread-hook, Which, with their operating and carrying parts, are carried by the machine-head, a work-support or horn carried by the pedestal, a readily-removable work-table, a needle-threader, and a tension device carried by the horn, a clamping device carried partly by the horn and partly by the pedestal, and a take-up device carried by the pedestal.

For full comprehension of the invention reference must be had to the annexed drawings, forming a part of this specification, in

which like symbols indicate corresponding parts, and wherein Figure 1 is a side elevation of the entire Fig. 3, an enlarged right-hand side elevation of the upper portion of the machine, partly in section and illustrating the take-up; Fig. 4, an enlarged left-hand side elevation of the upper portion of the machine, also partly in section and illustrating the threader. Fig. 5 is an enlarged front view of the machinehead with needle brace or guard in place. Fig. 5 is a detail rear side elevation of the horizontally-swinging frame of the feed device; Fig. 5 a detail side elevation, partly in section, of the carrying end of the presserfoot bar; Fig. 5, a transverse vertical section. of the carrying end of the presser-foot lever, taken on line a; as, Fig. 5 Fig. 5 a detail sectional view of the devices whereby the necessary feed movements are imparted to the feed device from its actuatinglevers. Fig. 6 is a left-hand side elevation of the machine-head, partly broken away to particularly illustrate the presser-foot mechanism, part of the feed mechanism, and the means for regulating the length of stitch. Fig. 7 is an enlarged right-hand side elevation of the machine-head; Fig. 8, a detail side elevation of the needle-operating mechanism. Fig. 9 is a detail side elevation of the thread-case, threadhook, and guide mechanism and part of the means for operating the thread-carrier. Fig. 10is a detail side elevation of another part of the means for operating the thread-carrier. Fig. 11 is a horizontal section on line 11 11, Fig. 9; Fig. 12, a detail elevation of connection between take-up rod and lever; Fig. 13, a horizontal section on line a: 00, Fig. 12; Fig. 14, an enlarged horizontal section on line m .20, Fig. 4; Fig. 15, a detail end elevation of thread-case with side partly broken away; Fig. 16, a side elevation showing tension device; Fig. 17, a transverse vertical section on line :0 00, Fig. 15, with bobbin removed; Fig. 18; a detail view of bobbin; Fig. 19, an enlarged transverse vertical section on line Z Z, Fig. 4; Fig. 20, a detail sectional View of needle-guide; Fig. 21, an enmachine; Fig. 2, a front elevation of the same;

transverse vertical sectional View taken on line a: a Fig. 21; Fig. 23, an enlarged detail perspective viewof threader; Figs. 24 and 25, detail perspective views of the work-table; Figs. 26 and 27, detail views of the presserfoot.

The several arrows adjacent to the figures of the lines on which the various sectional views are taken indicate the directions of the views.

The pedestal aof the machine is preferably of the type common to boot and shoe waxthread sewing-machines, except that it has an upper adjustable portion or neck a of less diameter than the pedestal-bod y and movable vertically through the openings in the top end of the latter, which is slotted, as at a on 0pposite sides, and suitable set-screws a passin g through the slots, provided for fixing it at any desired height. This movable neck a carries the head portion of the machine to be presently described, and also has bolted to it near its lower end awork-support preferably in the form of a hollow horn a, the front side of the pedestal-body a being slitted from its top end downward sufliciently to accommodate such horn, which projects through it, and as a means for securing the adjustment of these parts relatively to the pedestal a vertical screw a is threaded through a bracketarm a, projecting from the face of the pedestal-body a, and has its upper end bearing beneath the base of the horn, while its lower end is provided with an aperture to receive the end of any suitable bar wherebyit can be rotated.

The reason for making the machine-head and work-support adjustable is to accommodate operators who in some cases are inconvenienced one way or another by the fixed height of machines of this type.

The usual running-gear and attachments are, as heretofore, situated at the base of the pedestal, but as they form no part of my in- 'vention they need not be further alluded to.

The framing of the head portion of the machine comprises a base-plate I), having openings down through the center to communicate with the interior of the pedestal and lateral extensions 1) I), this base being screwed to the top of the neck portion a.

b is a vertical and forwardly-proj ecti-n g web integral with the base-plate Z) and having an opening 12 to accommodate the operatingcams and their shaft, and b" b are left and right hand standards bolted to the lateral extensions Z) I). The web b also has formed in one with it an upwardly-projecting ridge or extension 1), extending along its upper edge from its forward end rearward for about half the length of the web and slotted, as at If, to accommodate an adjustable sliding block forming a part of the mechanism to be presently described for regulating the length of stitch. Projections I) b are also formed on the upper edge of the web the one, 6 forming a bearing for a spindle forming a part of said stitch-regulatin g mechanism, and the latter, b serving as a part to which one of the feed-operating levers is pivoted;

Near the lower forward end of the web 5 a circular transverse opening I) is formed to allow of the operation of the thread-carrier, as will be hereinafter described, and at right angles to such opening b a second opening 11 is formed, extending up from the lower edge of the web, passing but connecting with the opening 1) as shown in Figs. 8 and 11, to allow the operation of and accommodate the needle and needle-segment. The upper forward end of the web I) is also bored vertically, as at Z1 to receive the lower end of a vertical standard 0, by which various parts to be hereinafter described are carried.

D is the shaft, mounted in the standards I)" b and carrying a driving-pulley D, a disk D having cam-grooves e and font in its face, a second disk D having a cam-groove 9 cut in its face, athird disk D, having cam-grooves h lo cut in its face, a fourth disk D, with camgrooves m a cut in its face, a fifth disk D, with canrgroove 0 also cut in its face, and a sixth disk D", also having a cam-groove 1) cut in its face.

Looking at the front of the machine and beginning at the right-hand end disk D, I will proceed throughout the series of disks and describe the several parts operated by the respective cam-grooves out in the faces of such disks, starting with cam-groove c for operating the take-up. The form of this groove e is clearly shown in Fig. 3, and it receives a roller 0', which is axially mounted on the side of a vertically-reciprocating rod, preferably formed in two parts or lengths e e and adapted to project laterallyinto said groove. The parts 6 e" of this rod are connected together through a collar-and-pin connection, such as e, and the upper part 6 which carries the roller c, is forked at its opposite end to bear on either side of a ring 0 carried by the shaft I) to steady and keep the rod always in a true vertical position. The lower part c of the rod passes down through an opening in the top of the movable neck portion of the pedestal, and at its lower end is formed with an eye a to allow of its being pivotally connected with the take-up lever 6 preferably in the following manner.

Reference being had to Figs. 12 and 13, a flanged sleeve 6 with screw-threaded end, is first passed through the eye 0", so that the flange will bear against the inner side of the endpf rod 6 and the screw-threaded on (1 projeots on the opposite side sufficiently to receive a nut e, which, being screwed up tightly against the side of the rod 6 connects the sleeve and rod together, after which a bolt 6 having a circular portion which can freely rotate in the sleeve and a screw-threaded end portion to receive a nut e, is passed through such sleeve 6 A washer c is then set in pl ace at a point out of contact with the flanged inner end of the sleeve and the remaining end of the bolt passed through a slot 6 in the short arm of the take-up lever c to receive a washer and the nut 6 which is screwed up tightly to effect a rigid connection between such take-up lever and the bolt, thus furnishing a rigid pivot capable of free rotation in the sleeve carried by the vertical-rod connections 6 e The take-up lever is of bell-crank form and fulcrumed within the movable neck portion of the pedestal upon a pivot pin or bolt 6 as shown in Figs. 3 and 14, passed through an opening in one side of the neck portion and screw-threaded into the opposite side of same, the head being shaped to conform with the periphery of such neck portion, so as not to interfere in any way with the adjustment of this latter within the pedestal proper.

The long arm of the take-up lever is curved, as shown in Fig. 3, to allow of its working within the horn a and carries a sheave e on its outer end, and near its inner end, in close proximity to its fulcrum-point, is cast a projection in the form of a rod and projects downward to engagcwith and operate the tension-lever.

The cam-groove fon the disk D acts in conjunction with the cam-groove n in the disk D to operate the feed mechanism. I will first describe the parts actuated by the groove f. This groove f is of the form shown in Fig. 3 and receives a roller f, carried by the inner end of a lever f fulcrumed on the projection]; and having its outer end bent inward beneath and flexibly connected with a secondary lever f which is in the form of a straight arm, having its inner end pivotally connected with the f ulcrnm-pin of the lever f and its outer end curved concentric with the spindle 0, (see Fig. 5,) carried in the front end of the web or frame and the flexible connection between it and the lever f is preferably effected by means of a coiled spring f taken around a stud f projecting from the side of the lever f and having one end connected to such lever and the other to the lever f preferably by means of a clampingplate f holding the end of the spring securely in a groove cut in the face of the lever f The forward end of the lever f*, as before mentioned, is bent in beneath the lever f and a lugf is preferably formed on the side of the lever f up against the under side of which the lever f is pressed by the action of the spring f and such lever f operates to impart a vertical reciprocating movement to a feed-dog, which I will describe subsequently to describing the cam-groove n and parts operated by it, which latter I will now describe.

The cam-groove n is of the form shown in Fig. 6 and acts in conjunction with camgroove f, as before mentioned, for operating the feed, and its particular function .is to impart the necessary horizontal or lateral reciprocating motion to the feed-dog, which motion in one direction is the feed movement proper thereof.

The groove 02 receives a roller a onthe in ner end of lever n which is fulcrumed to a movable block a adapted to be adjusted along the slot 11 in the upwardly-projecting ridge 1) of the web 5 by means of a rack 112 and pinion 113, the pinion being operated by hand-wheel 11 to impart a sliding movement to the rack, which is rigidly connected to fulcrum-block n thereby securing a diminished or lengthened movement of the outer end of lever 41 according as the fulcrum-block n is moved from or to the cam 41.

The outer end of the lever n is forked to enter between two annular shoulders n a, formed on the lower end of a sleeve 41 which has a laterally-projecting lug n at its upper end and is fitted loosely on the vertical standard 0 at the upper forward end of the web W.

A link n has one end loosely pivoted to the lug n and its opposite end to the upper end of a vertical carrier-frame n for the feed device, such frame having sleeves n n at its ends to receive the shanks of the various forms of feeding devices that may be used and being pivotally connected at its lower end at n to a horizontally-swingingframe n pivotally connected with the standard 0 through arms 77 n formed with openings to encircle such standard. This horizontallyswinging frame is to allow of the adjustment or rotation of the feed device to different positionsabout the nose of the horn in order to secure feed in various directions, as this is necessary in view of the horn being stationary.

To set the frame n and feed in the required position, a notched disk 12 is located above the arm n and held rigidly upon the standard 0 by means of a screw cap or nut n forcing it against a shoulder a on such standard, a spring-operated latch being used to engage the notches in the disk 01 and such latch being in the form of a lever n fulcrumed at n and having a vertical arm adapted to engage the notches inthe disk at and a horizontal arm adapted to be engaged by a pin projection 01 on a hand-lever or, also fulcrumed at n the spring n for operating such latch being shown in detail in Fig. 5. The vertical arm of the lever 12. is provided with a pin projection n adapted to come in contact with the frame n and so limit the outward movement of the lever. The hand-lever n is also used for elevating the feed device and is formed With a beveled projection 71 and a notch 11 on its upper side to bear upon and engage a pin projection on the side of sleeve 31, secured to the shank of the feed device.

The cam-groove g in disk D is of the form shown in Fig. 10 and acts in conjunction with the cam-groove h in disk D to operate the 4 was thread-carrier, the groove 9 receiving a roller 9, carried by the inner end of a lever 9 fulcrumed on the diminished outer end of a block 9 and held in place thereon by means of a nut g The inner end of this block, which is perforated, as at g, is also diminished and screw-threaded to take into a similarly-screwthreaded boring in the web W, as is shown in Fig. 11, and lever g carries at its outer end a segmental toothed rack 9 while the camgroove h is of the form shown in Figs. 9 and 10 and receives a roller h, carried on a studhearing h, as shown in Fig. 11, on the side of a sleeve 71., having wing-plates h, cast in one with it and bearing upon the sides of groove 7b to steady the sleeve and keeps roller h from being displaced by the rotation of a sliding rod 715, the diminished or inner end of which carries such sleeve loosely retained thereon by means of screw 7t. This sliding rod passes through and is carried in the perforation g? in the block g on the side of web or frame to which the lever is fulcru med, and through bearing 7L8, also on the side of the web, and is adapted to receive a reciprocating movement from groove h and a rotary movement from groove g through pinion 72 carried rigidly on the rod 7L5, segmental toothed rack g and lever g on which such segmental toothed rack is carried.

The forward end of the rod 71/5 is bored longitudinally and receives the rear end of the thread-carrier proper in the form of a finger 71. bent, as shown particularly in Figs. 5, J), and 11, so that its free end will project in front of the thread-case and carry the thread in a hook it at its extreme end from the needle to the thread-case, as shown clearly in Fig. 11.

The cam-groove 7; in the disk D" is of the form shown in Fig. 9 and operates the oscillating thread-hook and a device for preventing any accidental displacement of the threadcase when the oscillating hook is thrown back to release the thread after it has taken it around the case.

The groove receives a roller 713', carried on the inner end of a lever 78, which is fulcrumed at 70 to the web or frame I) and has its outer end terminating in a segmental toothed rack 7;. This rack k intermeshes with a pinion 7.2 which is formed in one with and centrally of the side of a circular plate 7;, which has a peripheral projection 75, to which is secured the oscillating thread-hook 768, the plate and pinion being centrally bored and mounted upon a stud-bearing k in one end of a bracket-arm 7.2 which is secured at the other end to the web or frame If and bent outward and parallel with such web, so as to leave sufiic-ient space between it and the web for the pinion and plate just mentioned and the thread-case now to be described.

The case inclosin g the upper thread is shown in detail in Figs. 15, 16, 17, and 18, and consists of a shallow cylindrical box 7t, one side or end of which is open and the other and closed side of which has a central boss or pin 7e which is preferably passed through a central opening in such closed side to project into the case, and carries in grooves formed along its periphery and end a spring-clip 70 parts of which project beyond the periphery but are compressible. The head of this pin 7512 provides a projection necessary to establish a space between the periphery of the case and the frame of the machine to enable the thread to pass freely around same.

The thread-reel or bobbin is formed with two circular side plates 76, which are connected by a centrally-tubular core 7e adapted to fit over the pin 76 in the thread-case and be held in place thereon by frictional contact with the projecting parts of the spring-clip 7e which are compressed by it.

The periphery of the thread-case 70 is perforated, as at 7a, to allow of the passage of the thread therethrough, and adjacent to such perforation a tension-plate 70 is arranged, one end of which is riveted to the case and the other end of which is bent inward to bear upon the periphery of the case and formed with a hook 70 a slot 76 in the periphery of the case extending from the perforation 70 to a point beneath the tension-plate near the hook thereof, and an adjoining screw 70 passing through an aperture in the tension-plate and screwed into the periphery of the case, being used to regulate the pressure of such plate.

The thread-case is stationary, being merely supported by a curved shelf or ledge projecting from the side of the web or frame 0 and prevented from displacement at one time by the thread-hook k when it is thrown forward, and at another time (when it is thrown back) by means of a device consisting of a rocking bell-crank lever in, fulcrumed to the web or frame b at 70 one arm of which is slotted, as at 7e to allow of a sliding connection with and its operation by lever 70 through a projection R on the side of such lever I62, and the outer end of the other arm is curved so as to partially encircle the thread-case when the oscillating hook is thrown back, as shown in chain lines in Fig. 9.

The cam-groove m in the disk D is of the form shown in Fig. 6 and used to operate the parts for raising and lowering the presserfoot. The groove receives a roller m, carried on the end of a lever m fulcrumed at m to the web 12 and having a lateral projection m on one side. This lever has a flexible connection with a secondary lever m, which I will now describe.

The secondary lever m is curved somewhat and fulcrumed centrally of its length at the same point on on the web as the lever m its inner or rear end carrying a screw m, with which one end of a retractile coiled spring m (which is shown partly broken away) is connected, its other end being connected by means of a screw m to a device for adjusting the tension of such spring, consisting of 

